Healthy soil and thick grass suppress weeds, but they don't eradicate them. An organic lawn includes weeds—that's the trade-off for zero synthetic chemicals.
You'll need selective herbicides (e.g., atrazine, 2,4-D blends labeled for centipede). Apply per label—centipede is sensitive to many chemicals.
Dollarweed and Nutsedge in New St. Augustine: Spot-Treat or Renovate
Creeping Charlie by a Lake: Skip Sugar, Try Physical + Cultural Control
Converting Centipede to St. Augustine: Kill the Old Grass First
Crabgrass in New Seeded Lawn: Pre-Emergent Next Spring
Transitioning to an Organic Lawn: The Sugar Program for North Carolina
Wild Strawberry Invasion in Fescue Lawn: Broadleaf Herbicide Control
Connecticut Lawn Weed Control and Fertilization: Separate for Best Results
Weed Control in New Hydroseeded Lawns
DIY Lawn Rehab on Long Island: Dog Zones, Soil, Species, Sequence
Weed Barrier Under Lawn Won't Stop Tree Seedlings
Creeping Charlie in Ontario: Borax Alternative Since Herbicides Banned
Why Early Spring Professional Weed Control Beats DIY Efforts
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